Chem Flashcards
let get it' (259 cards)
1
Q
Write the noble gas configuration for silver
A
[Kr] 5s2 4d9
2
Q
cm is equal to what?
A
cm=1m/100cm
3
Q
What does c equal?
A
speed of light
4
Q
What is the equation for the speed of light?
A
3.00 x 10^8 m/s
5
Q
What is the energy of a 933 nm wave?
A
2.13×10^-19
6
Q
What is the definition of electromagnetic spectrum?
A
a range of frequencies of waves that carry both electric and magnetic fields which includes gamma radiation, ultraviolet radiation, visible light, and infrared radiation
7
Q
If the frequency of a wave is high, its wavelength will be ____.
A
low
8
Q
What is the frequency of a blue light wave with a wavelength of 455 nm?
A
6.6 x 10^24 Hz
9
Q
What is a joule (J)?
A
the unit of energy; indicates the amount of kinetic energy carried by a mass moving at one meter per second
10
Q
What color has a greater frequency, purple or blue?
A
Purple
11
Q
Frequency is measured in ______.
A
hertz
12
Q
How is energy measured?
A
Joules (J)
13
Q
What is the speed of light (c)?
A
the distance light travels per unit of time; one of the universe’s constant values; equal to 3.00x10^8 meters per second
14
Q
What is the wavelength of red light with a frequency of 4.31 x 10^14?
A
6.96 x 10^-7m
15
Q
Speed of a wave is measured in ____.
A
m/s
16
Q
What is nm equal to?
A
nm=1m/10^9
17
Q
Calculate the wavelength of radiation with a frequency of 8.0 x 10^14 Hz.
A
3.8 × 10^-7 m
18
Q
What is energy (E)?
A
a property that can be transferred to another object that causes work, heat, or an action to occur
19
Q
What is Hertz (Hz)?
A
the unit of frequency; indicates how often a wave occurs per second
20
Q
What is wavelength (λ)?
A
the distance between two crests or two troughs of a wave; for electromagnetic radiation wavelengths are typically measured in units of nanometers or centimeters
21
Q
An electromagnetic wave that has the longest wavelength has the ________________.
A
lowest frequency
22
Q
If the wavelength increases, then the energy will ____.
A
decrease
23
Q
What is frequency (f)?
A
how often a wave passes by a point in space as a function of time
24
Q
What color has a longer wavelength: yellow or red?
A
Red
25
What are the correct units for frequency?
Hz or 1/s
26
These waves are used to send signals, including WiFi and text messages.
Radio
27
λ is the symbol for ...
Wavelength
28
What are the correct units for energy?
Joules
29
c is the symbol for ...
Speed of light
30
What are the correct units for wavelength?
Meters
31
h is the symbol for ...
Plank's Constant
32
E is the symbol for ...
Energy
33
What color has higher energy, blue or red?
blue
34
v is the symbol for...
Frequency
35
Increasing the amplitude of a wave, _________ the wave's energy.
increases
36
What constant equals 6.626 x 10^-34 Js?
Plank's constant
37
These high-energy waves are given off by radioactive materials.
Gamma
38
The higher the frequency, the higher the _____.
Energy
39
What is the distance from the peak of one wave to the next peak?
Wavelength
40
What is a repeating pattern that can transfer energy?
Wave
41
What constant equals 3.0 x 10^8 m/s?
Speed of light
42
These waves from the sun cause sunburn.
Ultraviolet
43
A simple, short range device such as a TV remote is using which Electromagnetic Wave to communicate?
Infrared Waves
44
What is the number of waves that pass a point in one second?
Frequency
45
What is the height of a wave from its resting point?
Amplitude
46
The frequency of any Electromagnetic Wave is determined by its Wavelength. But what does the Frequency control in an Electromagnetic Wave?
Its energy (radiation)!
47
Which high-energy waves are given off by radioactive materials?
Gamma
48
Which Electromagnetic Wave is responsible for the heat transfer known as radiation?
Infrared Waves
49
The energy of waves _______ as the wavelength gets shorter.
increases
50
Which EM Wave has the LEAST energy?
Radio Waves
51
Which EM Wave has the MOST energy?
Gamma Rays
52
Radio waves are used in ______________.
radio broadcasting
53
Infra-red radiation is used in _____________.
television remote control devices
54
These waves make water molecules vibrate and warm up.
Microwaves
55
Sunlight that reaches the surface of the Earth is a mixture of Visible Light, Infrared Waves, and what other Electromagnetic Wave?
UV Wave
56
Which EM wave is used to watch cable television?
Radio waves
57
Which Electromagnetic Wave is being described: found in the middle, medium wavelength and frequency, only one we can see.
Visible Light
58
X-rays are used in _________.
bone inspection
59
Which wave has the longer wavelength: Radio Waves or UV Waves?
Radio Waves!
60
Which Electromagnetic Wave is critical to modern day communication technology and internet?
Radio Waves
61
The higher the frequency, the higher the ____.
Energy
62
Visible light is used in ____.
flashlights
63
Which answer below is the only thing that is NOT shared between all Electromagnetic Waves?
Their Wavelengths and Frequencies.
64
Ultra-violet radiation is used in _______.
sterilization food and doctor equipment
65
What is the correct order or EM waves from LOWEST frequency to HIGHEST frequency?
Radio, Microwaves, Infrared, Visible Light, UV, X rays, Gamma rays
66
Which EM wave has the lowest frequency?
Radio Waves
67
What is the correct order or EM waves from HIGHEST frequency to LOWEST frequency?
Gamma Rays, X rays, UV, Visible Light, Infrared, Microwaves, Radiowaves
68
Which EM wave has the highest frequency?
Gamma Rays
69
This is the type of wave used in heat cameras and remote controls.
infrared
70
These are the types of EM waves that can be captured by cameras.
visible
71
Write the noble gas configuration for Osmium
[Xe] 6s2 4f14 5d6
72
What is the basic shape of an s-orbital?
sphere
73
What has the electron configuration: 1s²2s²2p⁶3s²3p⁶4s²3d¹⁰4p⁵?
Br
74
Where in the periodic table is the s-block located?
Left
75
What has the electron configuration: 1s²2s²2p⁶3s²3p⁶4s²3d²?
Ti
76
What is the electron configuration of boron?
https://res.cloudinary.com/gimkit-production/image/upload/v1571260163/kywb6mbywpytl9qvpdhp.png
77
What is the number of electrons in f subshell?
14
78
How many electrons can an s-subshell contain?
2
79
What is the electron configuration of: As?
https://res.cloudinary.com/gimkit-production/image/upload/v1571259955/nygrjqmo7yzulqarpw2o.png
80
How many orbitals comprise d subshell?
5
81
Which rule states that each orbital must be filled with a single electron before any orbital may contain two electrons?
Hund's
82
What has the electron configuration: 1s²2s²2p⁶3s²3p⁶4s²3d¹⁰4p¹?
Ga
83
How many electrons can a d-subshell contain?
10
84
What is the order of the energy sublevels?
spdf
85
What is the electron configuration of antimony?
https://res.cloudinary.com/gimkit-production/image/upload/v1571260037/gcshz2lipvc65zdtrlke.png
86
How many orbitals comprise the p subshell?
3
87
What is the electron configuration of: I?
https://res.cloudinary.com/gimkit-production/image/upload/v1571259842/kdmdwdvzbvz9zm3hftn8.png
88
What is the electron configuration of: Xe?
https://res.cloudinary.com/gimkit-production/image/upload/v1571259916/zzrgl5zhf3zdzlrfjjjc.png
89
What is the electron configuration of phosphorous?
https://res.cloudinary.com/gimkit-production/image/upload/v1571260116/qeethjztoo1rnmfsydi1.png
90
Which rules dictate that each orbital can contain a maximum of two electrons?
Pauli's
91
What is the electron configuration of: Cl?
https://res.cloudinary.com/gimkit-production/image/upload/v1571259807/qwdrht4zmlhte9u73gvc.png
92
Where in the periodic table is the p-block located?
Right
93
What is the electron configuration of tin?
https://res.cloudinary.com/gimkit-production/image/upload/v1571260088/paaaxdi8kunjwowlq7il.png
94
How many orbitals comprise the f subshell?
7
95
Which orbital comes after the 4s level?
3d
96
Which orbital comes after the 5s level?
4d
97
What has the electron configuration: 1s²2s²2p²?
Si
98
How many protons, neutrons and electrons are in Calcium -42?
22 neutrons, 20 protons and electrons
99
What is the number of electrons in p subshell?
6
100
What is the electron configuration of: Br?
https://res.cloudinary.com/gimkit-production/image/upload/v1571259994/ggbwoqeiyrijckrlai6r.png
101
What is the basic shape of the p orbital?
Dumbbell
102
What has the electron configuration: 1s²2s¹?
Li
103
What has the electron configuration: 1s²2s²2p⁶?
Ne
104
Where in the periodic table is the d-block located?
Middle
105
How many protons does Lithium have?
3
106
What is an isotope defined as?
different variations of an atom with differing neutrons
107
What lab tool would you use to find the volume of a liquid?
Graduated cylinder
108
Which element will tend to lose an electron in a reaction?
K
109
If a student finds the mass of gold in lab to be 22 g but the accepted mass is 18, what is the student's percent error?
22%
110
A negatively charged ion is known as a __________.
Anion
111
Identify the covalent compound.
Carbon monodioxide
112
When naming chemical compounds, what happens to the name of the second element?
Change ending to -ide
113
Which element has the electron configuration: 1s²2s²2p²?
C
114
What type of element is sodium (Na)?
alkali metals
115
0.000980 has how many sig figs?
3
116
How many sig figs does 45.680 have?
5
117
How many total electrons are shared in a double bond?
4
118
Which of the following is the correct name for FeO?
iron (II) oxide
119
Which of the following is NOT ionic?
dinitrogen monoxide
120
What does the '3' in 2p³ represent?
# of electrons
121
What do carbon-12 and carbon-14 have in common?
They have the same number of protons
122
What is Chemical Change defined as?
A change that alters the identity of a substance resulting in a new substance or substances with different properties.
123
What is a compound?
A substance made up of atoms of two or more different elements joined by chemical bonds
124
What is the molar mass of H₂O?
18
125
What is a solute defined as?
substance that is dissolved
126
What is the universal solvent?
water
127
What is a solvent defined as?
a substance that dissolves a solute
128
Who was the first scientist to state electrons travel in a specific orbit around the nucleus?
Bohr
129
What are the horizontal rows on the periodic table called?
periods
130
When does a chemical reaction stop?
When the limiting reactant is used up
131
What always requires diatomic oxygen gas as a reactant?
Combustion
132
What is the electron configuration of fluorine?
1s²2s²2p⁵
133
How many grams are in 0.750 moles of NaOH?
30.0 gram
134
What are the missing coefficients needed to balance this equation? ____Mg(s) + ____O₂(g) → ____MgO(s)
2, 1, 2
135
What is a Neutralization Reaction?
reaction between acids and bases that creates water and salt
136
What is melting a hunk of Metal?
Physical Change
137
What are the missing coefficients needed to balance this equation? ____NH₄NO₂ (s) → ____N₂ (g) + ____H₂O (l)
1; 1; 2
138
What is the molarity of an HCl solution if 50.0 mL is neutralized in a titration by 40.0 mL of 0.400 M NaOH?
0.320 M
139
What are isotopes?
Atoms with the same protons but different neutrons
140
What is the phase change from Gas to Liquid?
Condense
141
What is NOT evidence of a chemical reaction?
Moved to a different location
142
What is rust forming on the Statue of Liberty?
Chemical Change
143
What does the Law of Conservation of Matter state?
Matter cannot be created nor can it be destroyed
144
What is an ending substance in a chemical reaction?
Product
145
What is burning coal?
Chemical Change
146
What is the phase change from Liquid to Gas?
Evaporate
147
What is the phase change from Solid to Liquid?
Melt
148
What is the phase change from Solid to Gas?
Sublimation
149
What is the phase change from Liquid to Solid?
Freeze
150
What is a starting substance in a chemical reaction?
Reactant
151
What state of Matter is this?
Liquid
152
What state of Matter is this?
Gas
153
What is the atomic number of S?
16
154
Which series or family does Silicon belong to?
Metalloids
155
What is CO?
Carbon and Oxygen
156
What state of Matter is this?
Solid
157
In neutral atoms, the number of ____________ is equal to the number of protons.
electrons
158
The number of protons plus the number of neutrons equals the:
mass number
159
What is Group 2?
160
What is the state of Matter for Gas?
Gas
161
CO is?
Carbon and Oxygen
162
Group 2 is called...
Alkaline Earth Metals
163
What family is highlighted?
Noble gases
164
What is a double replacement reaction?
A chemical reaction where two elements in different compounds trade places
165
A particle that is electrically charged (positive or negative) is called ____________________.
an ion
166
What is the nucleus made up of?
protons and neutrons
167
This is the negatively charged particle located outside the nucleus.
electron
168
An ion has a charge of -1. What does this mean?
It has gained an electron
169
Beryllium has an atomic mass of 9 and an atomic number of 4. How many neutrons are located in one atom of Be?
5
170
How many electrons do you want to be stable?
8
171
What is a covalent bond?
The bond where the electrons are shared
172
What is an ionic bond?
The complete transfer of electrons
173
What is MgCl₂ called?
magnesium chloride
174
What is the formula for tetraphosphorus heptasulfide?
P₄S₇
175
Neon has an atomic mass of 20 and an atomic number of 10. How many protons are located in one atom of Ne?
10
176
What is BaBr₂ called?
barium bromide
177
What is the definition of a Physical Property?
Characteristic that can be observed or measured without changing the substance; for example, color
178
What is CBr₄ called?
carbon tetrabromide
179
What is SCl₄ called?
sulfur tetrachloride
180
What is a synthesis reaction?
A reaction in which two or more substances combine to form a new compound
181
This is Avogadro's Number.
6.02 x 10^23
182
What is a decomposition reaction?
A reaction in which a single compound breaks down to form two or more simpler substances
183
2 H₂ + O₂ → 2 H₂O is an example of what type of reaction?
Synthesis
184
Which scientist formed this model?
Bohr
185
How many valence electrons does a neutral atom of Hydrogen have?
1
186
What is a Physical Change?
A change to a substance that occurs without forming a new substance, such as a change in size or state of matter
187
Who was the first scientist to perform experiments to prove the existence of atoms?
Dalton
188
What are the vertical columns on the periodic table called?
groups/families
189
What is the same as the number of protons?
atomic number
190
What are atoms of the same element with different mass numbers called?
isotope
191
What is the positive particle in the atom?
proton
192
What are the metals in the purple area called?
Transition Metals
193
How many TOTAL valence electrons does Sulfur need to be 'happy'?
8
194
What is the correct name for Al2O3?
Aluminum Oxide
195
What is the negative particle in the atom?
electron
196
How many valence electrons does a neutral atom of Nitrogen have?
5
197
How many electrons are in a neutral Beryllium (Be) atom?
4
198
How many valence electrons does a neutral atom of Oxygen have?
6
199
How many valence electrons does a neutral atom of Aluminum have?
3
200
What is true about the nucleus of an atom?
Dense and positively charged
201
What is a proton?
A subatomic particle with a positive charge that is located in the nucleus of an atom
202
What type of bond occurs between a metal and a nonmetal?
ionic bond
203
If an element had an atomic number of 12, how many protons does it have?
12
204
If an atom has 15 protons and 16 neutrons, what is the atomic number?
15
205
Zn + H₂SO₄ → ZnSO₄ + H₂ is what type of reaction?
Single Displacement
206
What is the correct name for MgCl2?
Magnesium Chloride
207
What is the correct formula for Lithium Sulfide?
Li2S
208
Which of the following pairs of elements is most likely to form a covalent bond?
N and S
209
What is the ionic charge of an atom that has lost two electrons?
+2
210
Which bond occurs when one or more electrons is transferred from a metal to a nonmetal?
Ionic Bond
211
What is a mole ratio?
Fraction formed from the coefficients in a balanced chemical equation
212
Which of the following determines the identity of an atom?
Protons
213
What is an electron?
A subatomic particle with a negative charge
214
Where are electrons located in an atom?
Around the atom in a cloud
215
What is the atomic number of Bromine (Br)?
35
216
Which of these compounds has a covalent bond?
NH3
217
What is a neutron?
A subatomic particle with no electric charge, located within the nucleus of the atom
218
An example of a Halogen would be...
Iodine, atomic # 53
219
Which one shows the correct charge of each atomic particle?
Proton (positive) Neutron (neutral) Electron (negative)
220
If an atom has 15 protons and 16 neutrons, what is the mass number?
31
221
An atom of an element with atomic number 48 and mass number 120 contains...
48 protons, 48 electrons, and 72 neutrons
222
The order of the elements in the periodic table is based on...
The number of protons in the nucleus
223
2 CO + O₂ → 2 CO₂ is what type of reaction?
Synthesis
224
Pb + O₂ → PbO₂ is what type of reaction?
Synthesis
225
2 Fe + 6 NaBr → 2 FeBr₃ + 6 Na is what type of reaction?
Single Replacement
226
Cations are ions who possess what type of charge?
Positive
227
2 H₂O → 2 H₂ + O₂ is what type of reaction?
Decomposition
228
Which is a chemical change?
Rusting
229
CH₄ + 2 O₂ → CO₂ + 2 H₂O is what type of reaction?
Combustion
230
What is dihydrogen monoxide?
H2O
231
Which is not a property of metals?
brittle
232
What are the missing coefficients needed to balance this equation? ____Mg(s) + ____O₂(g) → ____MgO(s)?
2, 1, 2
233
AgNO₃ + NaCl → AgCl + NaNO₃ is what type of reaction?
Double Replacement
234
What is the charge of a cation?
positive
235
What type of bond is formed when Na forms a bond with O?
Ionic
236
Which of the following would have a Lewis dot structure with 5 dots around it?
Nitrogen
237
What are valence electrons?
Electrons involved in bonding
238
If you were converting moles to grams, what unit should be on the bottom of your conversion factor?
moles
239
How many protons does the element with the symbol Fe have?
26
240
Which of the four substances is a compound?
H2CO3
241
Isotopes have the same number of ___________ and a different number of _____________.
Protons, Neutrons
242
What is the number of Protons in (Cobalt) Co?
27
243
Which is a physical change?
Sublimating
244
Cations are ions who possess a what type of charge?
Positive
245
What is the student's percent error?
22%
246
What are the missing coefficients needed to balance this equation? ____Mg(s) + ____O₂(g) → ____MgO(s)
2, 1, 2
247
An ending substance in a chemical reaction is called a __________.
Product
248
Rust forming on the Statue of Liberty is a __________.
Chemical Change
249
Melting a hunk of metal is a __________.
Physical Change
250
Phase change from liquid to gas is known as __________.
Evaporate
251
Burning coal is a __________.
Chemical Change
252
Phase change from gas to liquid is known as __________.
Condense
253
Matter cannot be created nor can it be destroyed is known as the __________.
Law of Conservation of Matter
254
Identify the covalent compound.
Carbon monoxide
255
What are the missing coefficients needed to balance this equation? ____NH₄NO₂ (s) → ____N₂ (g) + ____H₂O (l)
1; 1; 2
256
Which of the following is NOT ionic? dinitrogen monoxide is NOT ionic. True or False?
True
257
What is the correct name for FeO?
iron (II) oxide
258
How many significant figures does 45.680 have?
5
259
0.000980 has how many significant figures?
3
